一种自修复聚合物膜及其制备方法和应用
By using a self-healing polymer film formed from polyoxyethylene and ionic liquid in lithium metal batteries, the problem of lithium metal anode interface film rupture is solved, achieving long life and efficient protection for lithium metal batteries.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-08-09
- Publication Date
- 2026-07-17
AI Technical Summary
In existing lithium metal batteries, the interfacial film of the lithium metal anode is prone to rupture during repeated lithium deposition/deposition processes, which cannot be repaired and leads to battery failure.
Using polyoxyethylene (PEO) as the backbone, an ionic liquid containing alkenyl imidazole cations and fluorosulfonyl imide anions is added. Polymerization and cross-linking are carried out by ultraviolet light irradiation to form a self-healing polymer film. When the film is damaged, the fluorosulfonyl imide anions are released and react with lithium metal to generate inorganic substances such as LiF, which repair the damaged interface film.
Self-healing polymer films can extend cycle life in lithium metal batteries by protecting the lithium metal anode through self-healing, thereby improving the battery's durability and stability.
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Figure CN117024827B_ABST
Abstract
Citation Information
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